Online ASIE Forms

Filing for the 2025 ASIE will open on Monday February 2, 2026

ASIE 2025

The filing period of the 2025 ASIE opens February 2, 2025.

Filing is an annual requirement and must be completed in accordance with local law 8-2013 and Nassau County Administrative Code Section 6-30.0.

The 2025 ASIE Filing is now open. Filings will be accepted from February 2 - April 1, 2026.

60-day extension applications are available on-line.

Begin your filing here: https://app.nassaucountyny.gov/assessment/asie

 http://www.nassaucountyny.gov/asie2020 

It is mandatory that all ASIE submissions be made electronically using the ASIE 2025 website.

You can still file previous year's ASIE applications by visiting the links below:

• ASIE 2024 - https://app.nassaucountyny.gov/assessment/asie2024/
• ASIE 2023 - https://app.nassaucountyny.gov/assessment/asie2023/
• ASIE 2022 - https://app.nassaucountyny.gov/assessment/asie2022/
• ASIE 2021 - https://app.nassaucountyny.gov/assessment/asie2021/
• ASIE 2020 - https://app.nassaucountyny.gov/Assessment/ASIE2020/
• ASIE 2019 - https://app.nassaucountyny.gov/Assessment/ASIE2019/
• ASIE 2018 - https://app.nassaucountyny.gov/Assessment/ASIE2018/
• ASIE 2017 - https://app.nassaucountyny.gov/Assessment/ASIE17/login.php
• ASIE 2016 - https://app.nassaucountyny.gov/Assessment/ASIE16/login.php